St. Xavier's College, Mumbai

Hi,
The fee structure of B.Com at St. Xavier's College is :
1st year: INR 5075
2nd year: INR 4455
3rd year: INR 5545
Total: INR 15075

Yes, St. Xavier's College, Kolkata does offer B.A. (Hons. ). In Political Science. For further details regarding this course, please refer to the link provided below:
https://www.shiksha.com/humanities-social-sciences/political-science/course/b-a-hons-in-political-science-st-xavier-s-college-Kolkata-park-street-83765.

St. Xavier offers Bachelor of Arts. They do not have the fine arts course.
Refer the link to know about the courses offered.
Link: https://www.shiksha.com/college/st-xavier-s-college-mahapalika-marg-mumbai-1184/courses?bc[]=1&ct[]=151&lo[]=1153

That really depends on the course you want to opt for. Only then eligibility can be known.

Yes, far better than St Xavier's College, Mumbai in every aspect.

Hi Surbhi!
In order to take admission in St. Xavier's college, you need to appear for an entrance exam. You can find the details about the exam here http://xaviers.edu/main/images/admissions/BMMBMSEntranceTest2018.pdf

Yes, you are eligible to apply in St. Xavier's College.

My friend, you can surely do that, but for that you need to give the entrance and qualify the entrance exam. And, if you qualify it with the given cutoff, you will be given the admissions and you can pursue your BA in Humanities from Saint Xavier's College Mumbai.